If the annual income from 5% stock at ₹125 is ₹200, what is the stock value?

A person invests ₹12000 in 6% stock at ₹120 and ₹8000 in 5% stock at ₹80. What is his overall yield percent?

What is the market price of a 5% stock when money is worth 4%?

What is the annual income from ₹6000, 8% stock?